// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef MEDIA_FORMATS_COMMON_STREAM_PARSER_TEST_BASE_H_
#define MEDIA_FORMATS_COMMON_STREAM_PARSER_TEST_BASE_H_

#include <stddef.h>
#include <stdint.h>

#include <memory>

#include "base/macros.h"
#include "media/base/audio_decoder_config.h"
#include "media/base/stream_parser.h"
#include "media/base/stream_parser_buffer.h"
#include "media/base/text_track_config.h"
#include "media/base/video_decoder_config.h"

namespace media {

// Test helper for verifying StreamParser behavior.
class StreamParserTestBase {
public:
    explicit StreamParserTestBase(std::unique_ptr<StreamParser> stream_parser);
    virtual ~StreamParserTestBase();

protected:
    // Chunks a given parser appropriate file.  Appends |append_bytes| at a time
    // until the file is exhausted.  Returns a coded string representing the
    // segments and timestamps of the extracted frames.
    //
    // The start of each media segment is designated by "NewSegment", similarly
    // the end of each segment by "EndOfSegment".  Segments end when one or more
    // frames are parsed from an append.  If the append contains a partial frame
    // the segment will continue into the next append.
    //
    // Parsed frame(s) are represented as "{ xxK yyK zzK }"  Where xx, yy, and zz
    // are the timestamps in milliseconds of each parsed frame.  For example:
    //
    //     "NewSegment{ 0K 23K 46K }EndOfSegment"
    //     "NewSegment{ 0K }{ 23K }{ 46K }EndOfSegment"
    //     "NewSegment{ 0K }{ 23K }EndOfSegmentNewSegment{ 46K }EndOfSegment"
    //
    std::string ParseFile(const std::string& filename, int append_bytes);

    // Similar to ParseFile() except parses the given |data| in a single append of
    // size |length|.
    std::string ParseData(const uint8_t* data, size_t length);

    // The last AudioDecoderConfig handed to OnNewConfig().
    const AudioDecoderConfig& last_audio_config() const
    {
        return last_audio_config_;
    }

private:
    bool AppendDataInPieces(const uint8_t* data,
        size_t length,
        size_t piece_size);
    void OnInitDone(const StreamParser::InitParameters& params);
    bool OnNewConfig(std::unique_ptr<MediaTracks> tracks,
        const StreamParser::TextTrackConfigMap& text_config);
    bool OnNewBuffers(const StreamParser::BufferQueueMap& buffer_queue_map);
    void OnKeyNeeded(EmeInitDataType type, const std::vector<uint8_t>& init_data);
    void OnNewSegment();
    void OnEndOfSegment();

    std::unique_ptr<StreamParser> parser_;
    std::stringstream results_stream_;
    AudioDecoderConfig last_audio_config_;
    StreamParser::TrackId audio_track_id_;

    DISALLOW_COPY_AND_ASSIGN(StreamParserTestBase);
};

} // namespace media

#endif // MEDIA_FORMATS_COMMON_STREAM_PARSER_TEST_BASE_H_
